Electrical switch.



NoE 8225036. PATBTED MAY 297 1906 E. G. BAGON.

ELE GL SWITCH.

APPLOATION TILED DEO.8.190'1.

www 5, Z

i narran sra'rns EARL C. BACON, OF INDIANAPOLIS,

MESNE ASSIGNMENTS, TO THE FLASH LIGHT SIGN PATENT y onirica.

NERSVILLE, INDIANA, A CORPORATION OF INDIANA.

ELECTHECAL SWDTO'L A Application filed December 8. 190A. Serial No. 236,042. f-

To rz/ZZ whom, it may concern:

Be it known that I', EARL C. BACON, a citizen of the United States of America, and

' structinn and in which the contacts are made and broken quickly. T his object is attained by the means described in. the specification and illustrated in the accompanying drawings, in whichf Figure l is a front elevation of a switch embodying my invention, the lights being shown diagrammatically. Fig. 2 is a sectional View taken upon line e v of Fig. 1.' Fig. 3 is a view similar to that shown in Fig. 1, but with thc parts in the opposite position..

Referring to the parts, alever A, having a short meta lic arm a and a long arm consisting of two parts a and a2, is pivoted at (L3 upon an insulatedr bracket B. Arm a has insula' tion a4 adjacent to arm a.

Parts a and a2 are pivoted at ai". A straight spring C passes I through the pivot .a5 and is confined at its upper end between posts? a andv a7, secured to the part a', and at its lower end is conned between studs a and a, secured to parte a2, so that the'tendency of the spring is to hold the parts a a2 in alinement with each other. At its lower end, part a2 carries contactepieces D and D and has a lower projecting lug al. At the lower end of the arm a2,- adjacerit to contactieces D and D', are terminals E, E7, E2, and P3. .Between .the terminals E and E2 is located. a rigid stud e, which is contacted by theluga?. f'

Pivoted te the outer end of arm a is a metal link G, made, preferably, of a metal having a large eoelicient of linear expansion in increasing degrees of temperature. Link G is secured at its lower end to a post g. The positive wire' g of the electric circuit is connected to'post g. Surrounding arm a and insulated 'trom it .is a coil of fine wire g2, one endof which is connected to' link G andthe other end of which is connected to ivot (1,3 and from there passes to wire g3, w 'ch leads to Specification of Letters Patent.

Patented May 29, 1906.

the terminal E. Terminal E is connectedn by wire g to series I-I of the lamps.

Leadin from post g is a wire g5, which is connecte to terminal E2. From terminal E3 a wire g leads intoseries I-I of the lamps.

INDiANA.- AssieNoR. BY Diener AND coMPANY, or con:l

At normal temperature .the length of the link G is such that it holds the contact-piece D against terminals E E. The current through wirel 'g' then passes through link G, i'

coil g2, wire g, terminal E, contact-piece D,

terminal E, and wire g", through the set H of lamps, and thence through wire g7 to the negative pole ofthe batter'r or energizing source. The current prssing through the coil g2 heats up the metallic arm a.

ens the same, and causes it to swing the lever A tothe position shown in Fig. 1. The stud e being contacted by the lug al@ holds the contact-piece D in communication with the The heat is conveyed by contact to the link G, lengthf terminals E E until the buckling ofthe arms l a a2 draws the lug al above stud e. Spring C then quickly throws the arm a2 over, bring'n ing the contact-piece Dvl against terminals 2 E3. The current then instead through the link G and the coil c7 passes through the lesser 'resistance offered by'wire g5, terminals' E2 E3, contact-piece D5, and wire g", through the lamps H. The cutting off of the current from. coil g2- causes the arm a of going and the link G tobecome cooled.Y The link then contracts and throws the lever a and-a,2 .in the position shown in.1"ig.'3. Again, in

this operationv the stud e ccntacting the lug al ho ds the eontact-pieee D against terminals E2 E3 until-.the buckling hascarried the. lug 0,10 up above Ystud e, when the sprin C will throw the contact-piece D quickly a am into us the. switch is thrown alternately, quickly, and"y automatically to bring first contact-piece D' contact with terminals E E".

in contact with terminals E E and then contact* ieee D in communication with termi- Ilals 2 E3.

veyed b contact to the arm G is sufficient to cause t e arm. G to len then' enough to the arms a. a2, so` that-a small movement inV The heat generated in the arm e and coni I OO v change in teinpcrfitnrn tu fflinng'e its lvng'lh upon nach side nl ils pivotqwint, :i lini; of :i

the arm L znnounls to n wnsidmwililfe mow ment at the end nl :nin ai: Siwndly, lli(x Contact ol the itnolfhci with thv :dnd f if; not, dep, .so that il'` lnlws linl :i sinnll ninwnwnl of the arln (12 lzn mov@ it lrmn on@ sidrf li) lha other 0l fh@ Stud e. lvl r wv iig link (l is made of n instal hrfing' n lnrgn wollivlnny 0l expansion, so that il'l dons not; like nini-l1 nl' :i

Suliinienu` to el'ec; the n'invmnent desirim.

What l claim is- 1. n combination a leve/1' having :in nrin material expanded by lwat connects-d lit one end to one arm of th aver und Secured in place at Lhvy other end, contact-piaceri carried by the @ther mni of lh@ levir, lierlninnl; zullii cent to the contact-plee indeiiendnt vrs 0F 0lt terminals, thaw/lier in connmniii'zrinn with the othnr sl; ol ninals, :i divided feed-wire one hrzwch oi 1 i lo lh@ link and the other to one, sot nl: eiininzilai, n

be heated by the rnrrniy llun'o'l'nin and in convey the heat to ihn link; :1nd :i 'wlw luidinzgr from the resislzmnn (zo the other sol,- 01" terminals.

f2. In cnlnl'linnliwn n, lni'nr having' nn 1i-n2 upon @zich Side nl" ils pivnbiminl, nm; nl' iis arms consistingol l'wn pnrls piif'nlvd ling-villini',

:L spring to lmlil the paris nm'ninlhY in :ilinci Inenpwith nach other, :L lng; nl this lnww und of the pivood l.'nni,':inwlnllic link nl n, mail orial expanded 'by lient cnnnwfloil :1L om vnd to the other :uin ol the lcmr :ind sur'nrnd in lamps one in cmnnninicatinn with one Het l i l i i plm@ :n2 ils millor 0nd, contact-pieces carried h): l'ln lirsl nrln nl the lover, lerniinzils adjucunl li) tho u(inlnrthpiwes, n Stud hotween ihn Vlorniinnls im' wnlnvling the lug, indciiindinll sels nlA lzin'ipn one in (foninninicatiin willi une suly nl lvrniinzils, the other in (50minnnimilinn with the uthor set nlt terminals, :i` dividid l` e,d-.viri, on@ branch olwhich lcndS L0 ihn l'nl\ und the olzhvr to one of the sets nl l rmin-- s, n rismnvo in 10imnnniczmion with ih@ link [n ha healed bythe current thernlironl and to cnnvcy thix heilt lo link, and a wire lvridingy from the ros' :lince to thv other Set nl' lerniinnlx 3. ln ronil'iinnlfun :i levvr consisting Ol a short niivviilliu :ii-in und zi long mn7 a pivot helm-'wn Lili!) arms, nn insulation in the lungor arm, conlaut-pieces at thelloivm' end of the lon; '1r armv7 iiirininnls upon nach side 0l' lh@v lnngger iii-:n :idii'mffni lo the contact-pieces, a linl; cnnnuc i 3d all; om end to thv installi@ :irrn :nid l v the other und Seninml to n pivot-post,

:si raf lance mirrnnndinr the metallic zirin resistzinc@ in cim'nnnnii'zili(ni `willi lw link lo 

